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Worksheets

Breathing

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

During Expiration (breathing out) the intercostal muscles _____________________ and the chest becomes smaller.

a)

contract

b)

relax

2.

The Lungs are made of muscles.

a)

True

b)

False

3.

The main ORGAN responsible for breathing is:

a)

the Brain

b)

the Lungs

c)

the Liver

d)

the Kidneys

4.

Which two muscles are responsible for BREATHING?

a)

The Diaphragm

b)

The Lungs

c)

The Heart

d)

The Intercostal Muscles

5.

During Breathing we get Oxygen in the body and get rid of which other gas?

a)

Carbon Dioxide

b)

Hydrogen

c)

Monoxide

6.

Which of the following shows what happens to the chest cavity when air rushes into the lungs?

a)

decrease in volume

b)

deflates

c)

expands

d)

relaxes

7.

Which of the following happens when you exhale?

a)

chest cavity expands

b)

your lumgs become smaller

c)

your chest cavity becomes smaller

d)

your lungs take in and give off oxygen

8.

As you breath in and out when do your lungs expand?

a)

when air rushes in

b)

when air rushes out

c)

when your diaphragm expands

d)

when your chest cavity relaxes

9.

How do you describe the condition of the diaphragm as one exhales?

a)

the diaphragm contracts

b)

the diaphragm relaxes

c)

the diaphragm goes down

d)

both a and c

10.

The trachea branches off into two:

a)

Alveoli

b)

Bronchus

c)

Bronchioles

11.
What is another name for the windpipe?
a)
Lungs
b)
Trachea
c)
Larynx
d)
Esophagus
12.
What is the purpose of nose hairs?
a)
Fight disease
b)
No purpose
c)
Keep dust/particles out of nose
d)
Tickle the nose so you sneeze
13.
a dome shaped sheet of muscle, the _________, separates the chest from the abdomen
a)
diaphragm
b)
epiglottis
c)
alveoli
d)
bronchial tubes
14.
Given the following structures:
1. larynx
2. nasal cavity
3. pharynx
4. trachea
Which of the following is the correct order that air would flow during inhalation. 
a)
1,2,3,4
b)
2,3,1,4
c)
2,1,3,4
d)
4,2,3,1 
15.

What primary gas product is removed from your system during Exhalation?

a)

Air

b)

Oxygen

c)

Carbon Dioxide

d)

Carbon Monoxide

16.

Where the exchange of gases actually occur?

a)

Bronchi

b)

Trachea

c)

Oxygen

d)

Alveoli

17.

The "gate" that prevents food or fluid from entering the trachea.

a)

Pharynx

b)

Larynx

c)

Esophagus

d)

Epiglottis

18.

What is the process called when you breath in the air?

a)

inhalation

b)

exhalation

19.
We can test the presence of carbon dioxide in exhaled air by bubbling it into .................... . 
a)
limewater
b)
lime juice
c)
lime
d)
water
20.

Why does your body need oxygen?

a)

to produce energy

b)

to expel carbon dioxide

c)

to supply the food with oxygen

d)

to fill the lungs with oxygen